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<h1 id="page-title" class="page">Core Configuration</h1>
<div class="sect1">
<h2 id="oauth2login-sample-boot"><a class="anchor" href="core.html#oauth2login-sample-boot"></a>Spring Boot 2.x Sample</h2>
<div class="sectionbody">
<div class="paragraph">
<p>Spring Boot 2.x brings full auto-configuration capabilities for OAuth 2.0 Login.</p>
</div>
<div class="paragraph">
<p>This section shows how to configure the <a href="https://github.com/spring-projects/spring-security-samples/tree/main/servlet/spring-boot/java/oauth2/login"><strong>OAuth 2.0 Login sample</strong></a> using <em>Google</em> as the <em>Authentication Provider</em> and covers the following topics:</p>
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<li>
<p><a href="core.html#oauth2login-sample-initial-setup">Initial setup</a></p>
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<p><a href="core.html#oauth2login-sample-redirect-uri">Setting the redirect URI</a></p>
</li>
<li>
<p><a href="core.html#oauth2login-sample-application-config">Configure application.yml</a></p>
</li>
<li>
<p><a href="core.html#oauth2login-sample-boot-application">Boot up the application</a></p>
</li>
</ul>
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<div class="sect2">
<h3 id="oauth2login-sample-initial-setup"><a class="anchor" href="core.html#oauth2login-sample-initial-setup"></a>Initial setup</h3>
<div class="paragraph">
<p>To use Google&#8217;s OAuth 2.0 authentication system for login, you must set up a project in the Google API Console to obtain OAuth 2.0 credentials.</p>
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<div class="admonitionblock note">
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<a href="https://developers.google.com/identity/protocols/OpenIDConnect">Google&#8217;s OAuth 2.0 implementation</a> for authentication conforms to the <a href="https://openid.net/connect/">OpenID Connect 1.0</a> specification and is <a href="https://openid.net/certification/">OpenID Certified</a>.
</td>
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</table>
</div>
<div class="paragraph">
<p>Follow the instructions on the <a href="https://developers.google.com/identity/protocols/OpenIDConnect">OpenID Connect</a> page, starting in the section, "Setting up OAuth 2.0".</p>
</div>
<div class="paragraph">
<p>After completing the "Obtain OAuth 2.0 credentials" instructions, you should have a new OAuth Client with credentials consisting of a Client ID and a Client Secret.</p>
</div>
</div>
<div class="sect2">
<h3 id="oauth2login-sample-redirect-uri"><a class="anchor" href="core.html#oauth2login-sample-redirect-uri"></a>Setting the redirect URI</h3>
<div class="paragraph">
<p>The redirect URI is the path in the application that the end-user&#8217;s user-agent is redirected back to after they have authenticated with Google and have granted access to the OAuth Client <em>(<a href="core.html#oauth2login-sample-initial-setup">created in the previous step</a>)</em> on the Consent page.</p>
</div>
<div class="paragraph">
<p>In the "Set a redirect URI" sub-section, ensure that the <strong>Authorized redirect URIs</strong> field is set to <code><a href="http://localhost:8080/login/oauth2/code/google" class="bare">http://localhost:8080/login/oauth2/code/google</a></code>.</p>
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The default redirect URI template is <code>{baseUrl}/login/oauth2/code/{registrationId}</code>.
The <strong><em>registrationId</em></strong> is a unique identifier for the <a href="../client/index.html#oauth2Client-client-registration" class="xref page">ClientRegistration</a>.
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<i class="fa icon-important" title="Important"></i>
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If the OAuth Client is running behind a proxy server, it is recommended to check <a href="../../../features/exploits/http.html#http-proxy-server" class="xref page">Proxy Server Configuration</a> to ensure the application is correctly configured.
Also, see the supported <a href="../client/authorization-grants.html#oauth2Client-auth-code-redirect-uri" class="xref page"> <code>URI</code> template variables</a> for <code>redirect-uri</code>.
</td>
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<div class="sect2">
<h3 id="oauth2login-sample-application-config"><a class="anchor" href="core.html#oauth2login-sample-application-config"></a>Configure application.yml</h3>
<div class="paragraph">
<p>Now that you have a new OAuth Client with Google, you need to configure the application to use the OAuth Client for the <em>authentication flow</em>.
To do so:</p>
</div>
<div class="olist arabic">
<ol class="arabic">
<li>
<p>Go to <code>application.yml</code> and set the following configuration:</p>
<div class="listingblock">
<div class="content">
<pre class="highlightjs highlight"><code class="language-yaml hljs" data-lang="yaml">spring:
  security:
    oauth2:
      client:
        registration:	<i class="conum" data-value="1"></i><b>(1)</b>
          google:	<i class="conum" data-value="2"></i><b>(2)</b>
            client-id: google-client-id
            client-secret: google-client-secret</code></pre>
</div>
</div>
<div class="exampleblock">
<div class="title">Example 1. OAuth Client properties</div>
<div class="content">
<div class="colist arabic">
<table>
<tr>
<td><i class="conum" data-value="1"></i><b>1</b></td>
<td><code>spring.security.oauth2.client.registration</code> is the base property prefix for OAuth Client properties.</td>
</tr>
<tr>
<td><i class="conum" data-value="2"></i><b>2</b></td>
<td>Following the base property prefix is the ID for the <a href="../client/index.html#oauth2Client-client-registration" class="xref page">ClientRegistration</a>, such as google.</td>
</tr>
</table>
</div>
</div>
</div>
</li>
<li>
<p>Replace the values in the <code>client-id</code> and <code>client-secret</code> property with the OAuth 2.0 credentials you created earlier.</p>
</li>
</ol>
</div>
</div>
<div class="sect2">
<h3 id="oauth2login-sample-boot-application"><a class="anchor" href="core.html#oauth2login-sample-boot-application"></a>Boot up the application</h3>
<div class="paragraph">
<p>Launch the Spring Boot 2.x sample and go to <code><a href="http://localhost:8080" class="bare">http://localhost:8080</a></code>.
You are then redirected to the default <em>auto-generated</em> login page, which displays a link for Google.</p>
</div>
<div class="paragraph">
<p>Click on the Google link, and you are then redirected to Google for authentication.</p>
</div>
<div class="paragraph">
<p>After authenticating with your Google account credentials, the next page presented to you is the Consent screen.
The Consent screen asks you to either allow or deny access to the OAuth Client you created earlier.
Click <strong>Allow</strong> to authorize the OAuth Client to access your email address and basic profile information.</p>
</div>
<div class="paragraph">
<p>At this point, the OAuth Client retrieves your email address and basic profile information from the <a href="https://openid.net/specs/openid-connect-core-1_0.html#UserInfo">UserInfo Endpoint</a> and establishes an authenticated session.</p>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="oauth2login-boot-property-mappings"><a class="anchor" href="core.html#oauth2login-boot-property-mappings"></a>Spring Boot 2.x Property Mappings</h2>
<div class="sectionbody">
<div class="paragraph">
<p>The following table outlines the mapping of the Spring Boot 2.x OAuth Client properties to the <a href="../client/index.html#oauth2Client-client-registration" class="xref page">ClientRegistration</a> properties.</p>
</div>
<table class="tableblock frame-all grid-all stretch">
<colgroup>
<col style="width: 50%;">
<col style="width: 50%;">
</colgroup>
<thead>
<tr>
<th class="tableblock halign-left valign-top">Spring Boot 2.x</th>
<th class="tableblock halign-left valign-top">ClientRegistration</th>
</tr>
</thead>
<tbody>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>spring.security.oauth2.client.registration.<em>[registrationId]</em></code></p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>registrationId</code></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>spring.security.oauth2.client.registration.<em>[registrationId]</em>.client-id</code></p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>clientId</code></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>spring.security.oauth2.client.registration.<em>[registrationId]</em>.client-secret</code></p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>clientSecret</code></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>spring.security.oauth2.client.registration.<em>[registrationId]</em>.client-authentication-method</code></p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>clientAuthenticationMethod</code></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>spring.security.oauth2.client.registration.<em>[registrationId]</em>.authorization-grant-type</code></p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>authorizationGrantType</code></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>spring.security.oauth2.client.registration.<em>[registrationId]</em>.redirect-uri</code></p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>redirectUri</code></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>spring.security.oauth2.client.registration.<em>[registrationId]</em>.scope</code></p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>scopes</code></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>spring.security.oauth2.client.registration.<em>[registrationId]</em>.client-name</code></p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>clientName</code></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>spring.security.oauth2.client.provider.<em>[providerId]</em>.authorization-uri</code></p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>providerDetails.authorizationUri</code></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>spring.security.oauth2.client.provider.<em>[providerId]</em>.token-uri</code></p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>providerDetails.tokenUri</code></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>spring.security.oauth2.client.provider.<em>[providerId]</em>.jwk-set-uri</code></p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>providerDetails.jwkSetUri</code></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>spring.security.oauth2.client.provider.<em>[providerId]</em>.issuer-uri</code></p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>providerDetails.issuerUri</code></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>spring.security.oauth2.client.provider.<em>[providerId]</em>.user-info-uri</code></p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>providerDetails.userInfoEndpoint.uri</code></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>spring.security.oauth2.client.provider.<em>[providerId]</em>.user-info-authentication-method</code></p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>providerDetails.userInfoEndpoint.authenticationMethod</code></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>spring.security.oauth2.client.provider.<em>[providerId]</em>.user-name-attribute</code></p></td>
<td class="tableblock halign-left valign-top"><p class="tableblock"><code>providerDetails.userInfoEndpoint.userNameAttributeName</code></p></td>
</tr>
</tbody>
</table>
<div class="admonitionblock tip">
<table>
<tr>
<td class="icon">
<i class="fa icon-tip" title="Tip"></i>
</td>
<td class="content">
A <code>ClientRegistration</code> can be initially configured using discovery of an OpenID Connect Provider&#8217;s <a href="https://openid.net/specs/openid-connect-discovery-1_0.html#ProviderConfig">Configuration endpoint</a> or an Authorization Server&#8217;s <a href="https://tools.ietf.org/html/rfc8414#section-3">Metadata endpoint</a>, by specifying the <code>spring.security.oauth2.client.provider.<em>[providerId]</em>.issuer-uri</code> property.
</td>
</tr>
</table>
</div>
</div>
</div>
<div class="sect1">
<h2 id="oauth2login-common-oauth2-provider"><a class="anchor" href="core.html#oauth2login-common-oauth2-provider"></a>CommonOAuth2Provider</h2>
<div class="sectionbody">
<div class="paragraph">
<p><code>CommonOAuth2Provider</code> pre-defines a set of default client properties for a number of well known providers: Google, GitHub, Facebook, and Okta.</p>
</div>
<div class="paragraph">
<p>For example, the <code>authorization-uri</code>, <code>token-uri</code>, and <code>user-info-uri</code> do not change often for a Provider.
Therefore, it makes sense to provide default values in order to reduce the required configuration.</p>
</div>
<div class="paragraph">
<p>As demonstrated previously, when we <a href="core.html#oauth2login-sample-application-config">configured a Google client</a>, only the <code>client-id</code> and <code>client-secret</code> properties are required.</p>
</div>
<div class="paragraph">
<p>The following listing shows an example:</p>
</div>
<div class="listingblock">
<div class="content">
<pre class="highlightjs highlight"><code class="language-yaml hljs" data-lang="yaml">spring:
  security:
    oauth2:
      client:
        registration:
          google:
            client-id: google-client-id
            client-secret: google-client-secret</code></pre>
</div>
</div>
<div class="admonitionblock tip">
<table>
<tr>
<td class="icon">
<i class="fa icon-tip" title="Tip"></i>
</td>
<td class="content">
The auto-defaulting of client properties works seamlessly here because the <code>registrationId</code> (<code>google</code>) matches the <code>GOOGLE</code> <code>enum</code> (case-insensitive) in <code>CommonOAuth2Provider</code>.
</td>
</tr>
</table>
</div>
<div class="paragraph">
<p>For cases where you may want to specify a different <code>registrationId</code>, such as <code>google-login</code>, you can still leverage auto-defaulting of client properties by configuring the <code>provider</code> property.</p>
</div>
<div class="paragraph">
<p>The following listing shows an example:</p>
</div>
<div class="listingblock">
<div class="content">
<pre class="highlightjs highlight"><code class="language-yaml hljs" data-lang="yaml">spring:
  security:
    oauth2:
      client:
        registration:
          google-login:	<i class="conum" data-value="1"></i><b>(1)</b>
            provider: google	<i class="conum" data-value="2"></i><b>(2)</b>
            client-id: google-client-id
            client-secret: google-client-secret</code></pre>
</div>
</div>
<div class="colist arabic">
<table>
<tr>
<td><i class="conum" data-value="1"></i><b>1</b></td>
<td>The <code>registrationId</code> is set to <code>google-login</code>.</td>
</tr>
<tr>
<td><i class="conum" data-value="2"></i><b>2</b></td>
<td>The <code>provider</code> property is set to <code>google</code>, which will leverage the auto-defaulting of client properties set in <code>CommonOAuth2Provider.GOOGLE.getBuilder()</code>.</td>
</tr>
</table>
</div>
</div>
</div>
<div class="sect1">
<h2 id="oauth2login-custom-provider-properties"><a class="anchor" href="core.html#oauth2login-custom-provider-properties"></a>Configuring Custom Provider Properties</h2>
<div class="sectionbody">
<div class="paragraph">
<p>There are some OAuth 2.0 Providers that support multi-tenancy, which results in different protocol endpoints for each tenant (or sub-domain).</p>
</div>
<div class="paragraph">
<p>For example, an OAuth Client registered with Okta is assigned to a specific sub-domain and have their own protocol endpoints.</p>
</div>
<div class="paragraph">
<p>For these cases, Spring Boot 2.x provides the following base property for configuring custom provider properties: <code>spring.security.oauth2.client.provider.<em>[providerId]</em></code>.</p>
</div>
<div class="paragraph">
<p>The following listing shows an example:</p>
</div>
<div class="listingblock">
<div class="content">
<pre class="highlightjs highlight"><code class="language-yaml hljs" data-lang="yaml">spring:
  security:
    oauth2:
      client:
        registration:
          okta:
            client-id: okta-client-id
            client-secret: okta-client-secret
        provider:
          okta:	<i class="conum" data-value="1"></i><b>(1)</b>
            authorization-uri: https://your-subdomain.oktapreview.com/oauth2/v1/authorize
            token-uri: https://your-subdomain.oktapreview.com/oauth2/v1/token
            user-info-uri: https://your-subdomain.oktapreview.com/oauth2/v1/userinfo
            user-name-attribute: sub
            jwk-set-uri: https://your-subdomain.oktapreview.com/oauth2/v1/keys</code></pre>
</div>
</div>
<div class="colist arabic">
<table>
<tr>
<td><i class="conum" data-value="1"></i><b>1</b></td>
<td>The base property (<code>spring.security.oauth2.client.provider.okta</code>) allows for custom configuration of protocol endpoint locations.</td>
</tr>
</table>
</div>
</div>
</div>
<div class="sect1">
<h2 id="oauth2login-override-boot-autoconfig"><a class="anchor" href="core.html#oauth2login-override-boot-autoconfig"></a>Overriding Spring Boot 2.x Auto-configuration</h2>
<div class="sectionbody">
<div class="paragraph">
<p>The Spring Boot 2.x auto-configuration class for OAuth Client support is <code>OAuth2ClientAutoConfiguration</code>.</p>
</div>
<div class="paragraph">
<p>It performs the following tasks:</p>
</div>
<div class="ulist">
<ul>
<li>
<p>Registers a <code>ClientRegistrationRepository</code> <code>@Bean</code> composed of <code>ClientRegistration</code>(s) from the configured OAuth Client properties.</p>
</li>
<li>
<p>Provides a <code>WebSecurityConfigurerAdapter</code> <code>@Configuration</code> and enables OAuth 2.0 Login through <code>httpSecurity.oauth2Login()</code>.</p>
</li>
</ul>
</div>
<div class="paragraph">
<p>If you need to override the auto-configuration based on your specific requirements, you may do so in the following ways:</p>
</div>
<div class="ulist">
<ul>
<li>
<p><a href="core.html#oauth2login-register-clientregistrationrepository-bean">Register a ClientRegistrationRepository @Bean</a></p>
</li>
<li>
<p><a href="core.html#oauth2login-provide-websecurityconfigureradapter">Provide a WebSecurityConfigurerAdapter</a></p>
</li>
<li>
<p><a href="core.html#oauth2login-completely-override-autoconfiguration">Completely Override the Auto-configuration</a></p>
</li>
</ul>
</div>
<div class="sect2">
<h3 id="oauth2login-register-clientregistrationrepository-bean"><a class="anchor" href="core.html#oauth2login-register-clientregistrationrepository-bean"></a>Register a ClientRegistrationRepository @Bean</h3>
<div class="paragraph">
<p>The following example shows how to register a <code>ClientRegistrationRepository</code> <code>@Bean</code>:</p>
</div>
<div class="exampleblock">
<div class="content">
<div class="listingblock primary">
<div class="title">Java</div>
<div class="content">
<pre class="highlightjs highlight"><code class="language-java hljs" data-lang="java">@Configuration
public class OAuth2LoginConfig {

	@Bean
	public ClientRegistrationRepository clientRegistrationRepository() {
		return new InMemoryClientRegistrationRepository(this.googleClientRegistration());
	}

	private ClientRegistration googleClientRegistration() {
		return ClientRegistration.withRegistrationId("google")
			.clientId("google-client-id")
			.clientSecret("google-client-secret")
			.clientAuthenticationMethod(ClientAuthenticationMethod.CLIENT_SECRET_BASIC)
			.authorizationGrantType(AuthorizationGrantType.AUTHORIZATION_CODE)
			.redirectUri("{baseUrl}/login/oauth2/code/{registrationId}")
			.scope("openid", "profile", "email", "address", "phone")
			.authorizationUri("https://accounts.google.com/o/oauth2/v2/auth")
			.tokenUri("https://www.googleapis.com/oauth2/v4/token")
			.userInfoUri("https://www.googleapis.com/oauth2/v3/userinfo")
			.userNameAttributeName(IdTokenClaimNames.SUB)
			.jwkSetUri("https://www.googleapis.com/oauth2/v3/certs")
			.clientName("Google")
			.build();
	}
}</code></pre>
</div>
</div>
<div class="listingblock secondary">
<div class="title">Kotlin</div>
<div class="content">
<pre class="highlightjs highlight"><code class="language-kotlin hljs" data-lang="kotlin">@Configuration
class OAuth2LoginConfig {
    @Bean
    fun clientRegistrationRepository(): ClientRegistrationRepository {
        return InMemoryClientRegistrationRepository(googleClientRegistration())
    }

    private fun googleClientRegistration(): ClientRegistration {
        return ClientRegistration.withRegistrationId("google")
                .clientId("google-client-id")
                .clientSecret("google-client-secret")
                .clientAuthenticationMethod(ClientAuthenticationMethod.CLIENT_SECRET_BASIC)
                .authorizationGrantType(AuthorizationGrantType.AUTHORIZATION_CODE)
                .redirectUri("{baseUrl}/login/oauth2/code/{registrationId}")
                .scope("openid", "profile", "email", "address", "phone")
                .authorizationUri("https://accounts.google.com/o/oauth2/v2/auth")
                .tokenUri("https://www.googleapis.com/oauth2/v4/token")
                .userInfoUri("https://www.googleapis.com/oauth2/v3/userinfo")
                .userNameAttributeName(IdTokenClaimNames.SUB)
                .jwkSetUri("https://www.googleapis.com/oauth2/v3/certs")
                .clientName("Google")
                .build()
    }
}</code></pre>
</div>
</div>
</div>
</div>
</div>
<div class="sect2">
<h3 id="oauth2login-provide-websecurityconfigureradapter"><a class="anchor" href="core.html#oauth2login-provide-websecurityconfigureradapter"></a>Provide a WebSecurityConfigurerAdapter</h3>
<div class="paragraph">
<p>The following example shows how to provide a <code>WebSecurityConfigurerAdapter</code> with <code>@EnableWebSecurity</code> and enable OAuth 2.0 login through <code>httpSecurity.oauth2Login()</code>:</p>
</div>
<div class="exampleblock">
<div class="title">Example 2. OAuth2 Login Configuration</div>
<div class="content">
<div class="listingblock primary">
<div class="title">Java</div>
<div class="content">
<pre class="highlightjs highlight"><code class="language-java hljs" data-lang="java">@EnableWebSecurity
public class OAuth2LoginSecurityConfig extends WebSecurityConfigurerAdapter {

	@Override
	protected void configure(HttpSecurity http) throws Exception {
		http
			.authorizeHttpRequests(authorize -&gt; authorize
				.anyRequest().authenticated()
			)
			.oauth2Login(withDefaults());
	}
}</code></pre>
</div>
</div>
<div class="listingblock secondary">
<div class="title">Kotlin</div>
<div class="content">
<pre class="highlightjs highlight"><code class="language-kotlin hljs" data-lang="kotlin">@EnableWebSecurity
class OAuth2LoginSecurityConfig : WebSecurityConfigurerAdapter() {

    override fun configure(http: HttpSecurity) {
        http {
            authorizeRequests {
                authorize(anyRequest, authenticated)
            }
            oauth2Login { }
        }
    }
}</code></pre>
</div>
</div>
</div>
</div>
</div>
<div class="sect2">
<h3 id="oauth2login-completely-override-autoconfiguration"><a class="anchor" href="core.html#oauth2login-completely-override-autoconfiguration"></a>Completely Override the Auto-configuration</h3>
<div class="paragraph">
<p>The following example shows how to completely override the auto-configuration by registering a <code>ClientRegistrationRepository</code> <code>@Bean</code> and providing a <code>WebSecurityConfigurerAdapter</code>.</p>
</div>
<div class="exampleblock">
<div class="title">Example 3. Overriding the auto-configuration</div>
<div class="content">
<div class="listingblock primary">
<div class="title">Java</div>
<div class="content">
<pre class="highlightjs highlight"><code class="language-java hljs" data-lang="java">@Configuration
public class OAuth2LoginConfig {

	@EnableWebSecurity
	public static class OAuth2LoginSecurityConfig extends WebSecurityConfigurerAdapter {

		@Override
		protected void configure(HttpSecurity http) throws Exception {
			http
				.authorizeHttpRequests(authorize -&gt; authorize
					.anyRequest().authenticated()
				)
				.oauth2Login(withDefaults());
		}
	}

	@Bean
	public ClientRegistrationRepository clientRegistrationRepository() {
		return new InMemoryClientRegistrationRepository(this.googleClientRegistration());
	}

	private ClientRegistration googleClientRegistration() {
		return ClientRegistration.withRegistrationId("google")
			.clientId("google-client-id")
			.clientSecret("google-client-secret")
			.clientAuthenticationMethod(ClientAuthenticationMethod.CLIENT_SECRET_BASIC)
			.authorizationGrantType(AuthorizationGrantType.AUTHORIZATION_CODE)
			.redirectUri("{baseUrl}/login/oauth2/code/{registrationId}")
			.scope("openid", "profile", "email", "address", "phone")
			.authorizationUri("https://accounts.google.com/o/oauth2/v2/auth")
			.tokenUri("https://www.googleapis.com/oauth2/v4/token")
			.userInfoUri("https://www.googleapis.com/oauth2/v3/userinfo")
			.userNameAttributeName(IdTokenClaimNames.SUB)
			.jwkSetUri("https://www.googleapis.com/oauth2/v3/certs")
			.clientName("Google")
			.build();
	}
}</code></pre>
</div>
</div>
<div class="listingblock secondary">
<div class="title">Kotlin</div>
<div class="content">
<pre class="highlightjs highlight"><code class="language-kotlin hljs" data-lang="kotlin">@Configuration
class OAuth2LoginConfig {

    @EnableWebSecurity
    class OAuth2LoginSecurityConfig: WebSecurityConfigurerAdapter() {

        override fun configure(http: HttpSecurity) {
            http {
                authorizeRequests {
                    authorize(anyRequest, authenticated)
                }
                oauth2Login { }
            }
        }
    }

    @Bean
    fun clientRegistrationRepository(): ClientRegistrationRepository {
        return InMemoryClientRegistrationRepository(googleClientRegistration())
    }

    private fun googleClientRegistration(): ClientRegistration {
        return ClientRegistration.withRegistrationId("google")
                .clientId("google-client-id")
                .clientSecret("google-client-secret")
                .clientAuthenticationMethod(ClientAuthenticationMethod.CLIENT_SECRET_BASIC)
                .authorizationGrantType(AuthorizationGrantType.AUTHORIZATION_CODE)
                .redirectUri("{baseUrl}/login/oauth2/code/{registrationId}")
                .scope("openid", "profile", "email", "address", "phone")
                .authorizationUri("https://accounts.google.com/o/oauth2/v2/auth")
                .tokenUri("https://www.googleapis.com/oauth2/v4/token")
                .userInfoUri("https://www.googleapis.com/oauth2/v3/userinfo")
                .userNameAttributeName(IdTokenClaimNames.SUB)
                .jwkSetUri("https://www.googleapis.com/oauth2/v3/certs")
                .clientName("Google")
                .build()
    }
}</code></pre>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="oauth2login-javaconfig-wo-boot"><a class="anchor" href="core.html#oauth2login-javaconfig-wo-boot"></a>Java Configuration without Spring Boot 2.x</h2>
<div class="sectionbody">
<div class="paragraph">
<p>If you are not able to use Spring Boot 2.x and would like to configure one of the pre-defined providers in <code>CommonOAuth2Provider</code> (for example, Google), apply the following configuration:</p>
</div>
<div class="exampleblock">
<div class="title">Example 4. OAuth2 Login Configuration</div>
<div class="content">
<div class="listingblock primary">
<div class="title">Java</div>
<div class="content">
<pre class="highlightjs highlight"><code class="language-java hljs" data-lang="java">@Configuration
public class OAuth2LoginConfig {

	@EnableWebSecurity
	public static class OAuth2LoginSecurityConfig extends WebSecurityConfigurerAdapter {

		@Override
		protected void configure(HttpSecurity http) throws Exception {
			http
				.authorizeHttpRequests(authorize -&gt; authorize
					.anyRequest().authenticated()
				)
				.oauth2Login(withDefaults());
		}
	}

	@Bean
	public ClientRegistrationRepository clientRegistrationRepository() {
		return new InMemoryClientRegistrationRepository(this.googleClientRegistration());
	}

	@Bean
	public OAuth2AuthorizedClientService authorizedClientService(
			ClientRegistrationRepository clientRegistrationRepository) {
		return new InMemoryOAuth2AuthorizedClientService(clientRegistrationRepository);
	}

	@Bean
	public OAuth2AuthorizedClientRepository authorizedClientRepository(
			OAuth2AuthorizedClientService authorizedClientService) {
		return new AuthenticatedPrincipalOAuth2AuthorizedClientRepository(authorizedClientService);
	}

	private ClientRegistration googleClientRegistration() {
		return CommonOAuth2Provider.GOOGLE.getBuilder("google")
			.clientId("google-client-id")
			.clientSecret("google-client-secret")
			.build();
	}
}</code></pre>
</div>
</div>
<div class="listingblock secondary">
<div class="title">Kotlin</div>
<div class="content">
<pre class="highlightjs highlight"><code class="language-kotlin hljs" data-lang="kotlin">@Configuration
open class OAuth2LoginConfig {
    @EnableWebSecurity
    open class OAuth2LoginSecurityConfig : WebSecurityConfigurerAdapter() {
        override fun configure(http: HttpSecurity) {
            http {
                authorizeRequests {
                    authorize(anyRequest, authenticated)
                }
                oauth2Login { }
            }
        }
    }

    @Bean
    open fun clientRegistrationRepository(): ClientRegistrationRepository {
        return InMemoryClientRegistrationRepository(googleClientRegistration())
    }

    @Bean
    open fun authorizedClientService(
        clientRegistrationRepository: ClientRegistrationRepository?
    ): OAuth2AuthorizedClientService {
        return InMemoryOAuth2AuthorizedClientService(clientRegistrationRepository)
    }

    @Bean
    open fun authorizedClientRepository(
        authorizedClientService: OAuth2AuthorizedClientService?
    ): OAuth2AuthorizedClientRepository {
        return AuthenticatedPrincipalOAuth2AuthorizedClientRepository(authorizedClientService)
    }

    private fun googleClientRegistration(): ClientRegistration {
        return CommonOAuth2Provider.GOOGLE.getBuilder("google")
            .clientId("google-client-id")
            .clientSecret("google-client-secret")
            .build()
    }
}</code></pre>
</div>
</div>
<div class="listingblock secondary">
<div class="title">Xml</div>
<div class="content">
<pre class="highlightjs highlight"><code class="language-xml hljs" data-lang="xml">&lt;http auto-config="true"&gt;
	&lt;intercept-url pattern="/**" access="authenticated"/&gt;
	&lt;oauth2-login authorized-client-repository-ref="authorizedClientRepository"/&gt;
&lt;/http&gt;

&lt;client-registrations&gt;
	&lt;client-registration registration-id="google"
						 client-id="google-client-id"
						 client-secret="google-client-secret"
						 provider-id="google"/&gt;
&lt;/client-registrations&gt;

&lt;b:bean id="authorizedClientService"
		class="org.springframework.security.oauth2.client.InMemoryOAuth2AuthorizedClientService"
		autowire="constructor"/&gt;

&lt;b:bean id="authorizedClientRepository"
		class="org.springframework.security.oauth2.client.web.AuthenticatedPrincipalOAuth2AuthorizedClientRepository"&gt;
	&lt;b:constructor-arg ref="authorizedClientService"/&gt;
&lt;/b:bean&gt;</code></pre>
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